220320330 has 16 divisors (see below), whose sum is σ = 528768864. Its totient is φ = 58752080.

The previous prime is 220320329. The next prime is 220320403. The reversal of 220320330 is 33023022.

It is a super-2 number, since 2×220320330² = 97082095622617800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3671976 + ... + 3672035.

It is an arithmetic number, because the mean of its divisors is an integer number (33048054).

Almost surely, 2^220320330 is an apocalyptic number.

220320330 is an abundant number, since it is smaller than the sum of its proper divisors (308448534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

220320330 is a wasteful number, since it uses less digits than its factorization.

220320330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7344021.

The product of its (nonzero) digits is 216, while the sum is 15.

The square root of 220320330 is about 14843.1913684356. The cubic root of 220320330 is about 603.9739272841.

Adding to 220320330 its reverse (33023022), we get a palindrome (253343352).

The spelling of 220320330 in words is "two hundred twenty million, three hundred twenty thousand, three hundred thirty".